Attachment for object-finders.



H. C. LAWSON. 5 ATTACHMENT FOR OBJECT FINDEVRS.

APPLICATIONTILED D01. 10. 1914.

Pitenfbed July 20,

I uvmlfok H. dI/a wson To all abh'om it may mm:

- nanny csfLawsoN, or mcenneoa, TEXAS.

"Be it known thatI, HARRY C. LAwsoN, a

' citizen .of'the United States, residing at Mc- 4 is a vertical section on y-y of Fig. 2.

Gregor, in the county ofMcLennan and State of Texas, have invented 'certain'neW and useful Improvements in Attachments;

for Object- Finders, of which the followspecification.

My invention relates to a new and useful attachment forthe'object finderof a camera, and its objectistoprovide an attachment that will. permit '-the, obj ect' orjscene about to be photographed to be viewed through a rectangular orifice, which orifice by a simnot be likely to get out of working order. With these and variousother 0b]ects inview, my invention hasrelation to certain novel features of the construction and use,

an example of which :is described in the following specification, and is illustrated in the accompanying drawing, wherein:

' vFigures 1 and 2. are" both plan views of an object finder detached from a camera, and equipped with my attachment, the former view showing thedevice arranged to take a picture upon a verticallyflelongated film or plate, and the'latter showing the adjustment when the picture is to be taken upon a horizontally elongated film or 'plate- Fig. 3 is a vertical section on ww of Fig. 1. Fig.

Fig. is. a plan view of the object finder, both of the oblong plates which limit the view of the object being "shown vertically disposed. Fig. 6 is a view showing in side elevationmy attachment removed from the object finder. 'vFig.7 is a frontv view of the same. I Referring now more particularly to the drawing, wherein like reference characters designate'similar parts. in all the figures,

' the numeral l denotes thersmall light box of an ordinary object finder, said box containing the usual. mirror 2 inclined at an angle of substantially forty-five degrees, the

. front and'top of the box being respectively ATTACHMENT FOR osano'r-rmnnns;

provided with lenses 3 and 4, the former of which admits substantially. horizontal rays of light to the mirror '2 from which the light reflects upward through the lens 4 tothe eye. The usual hood 5 is pivoted upon the upper front portion ofthe box 1 upon a pintle 5 The preceding description that of' a well known and commonly usedobject finder. My attachment thereto. primarily comprisesthree plates 6, 7 and 8. The plate 6 is formed with a central aperture!) preferably somewhat larger than the exposed portion of the lens 4; Said plate is formed at its front and rear ends respectively with the hooks 11 are first engaged with the rear edge of the top of the object finder, and the hooks are then sprung downwardly to engage the'downturned front edge .11

of the said top. a

The plates 7 and 8 are of oblong shape, and symmetrically. formed with central apertures 12. A short edge of the plate 7 is hinged upon the plate 6 at the front there of, so that when said plate 7 is swung to a horizontal position contiguous with the plate. 6, the object to be-photographed may be Specification of Letters Patent. Patented July 1915 i ,I Application filed October '10, 1914. Serial No, 866,164.

pairs of hooks 10 and 1 1, the former being 1 somewhat larger than the latter. In applying theattachment to the object finder,

seenthrough a --rectangular aperture as it will appear on a vertically elongated plate or portion of the film. The plate 8 has one of its longer, edges in hinged connection with a lateral edge of the plate 6 so that when adjusted horizontally (or contiguous -with said plate 6) the object to ,be photographed may be viewed as it will appear upon a horizontally elongated plate or portion of film. By using the plates 7 and 8 orificed as shown and described, the object or scene to be photographed is viewed through a rectangle proportioned as'is thev rectangle formed about the picture upon the film or plate, thus enabling the photographer to more accurately and perfectly space the object or scene so as to center it properly in said rectangle. v

The invention is presented as including all such. modifications and changes as'properly come within the scope of the. following claim.

What I claim is:

In a device of the character, described, the combination with an object finder, of two plates hinged upon the top of the object 'Q fir ldrftliei rl lixs l teSti'IfiBny V angles one with thegpther',;;sald plajte'sbging namen'td this specification; in the presen ed 'f rmed with"rctangulan'ziprtures of ob-r two subscribingfwiijhesses; r. I V long sha pe; theiIOngr dimenS i hSfofbne, HARRY 'C. LAWSON. 5 of said apertures being transverse with'thefi Witnesses v H longer dimension of 'the fo'ther when both' E. WLHOUSE, r v V iplates'are ima horizontal plane. 1 'R.'R;R LOTT AU'R. 

